/usr/bin/java -Xmx16000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerCInline.xml -s ../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf -i ../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-aa1e80b [2020-12-17 23:51:43,081 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-12-17 23:51:43,084 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-12-17 23:51:43,119 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-12-17 23:51:43,120 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-12-17 23:51:43,122 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-12-17 23:51:43,123 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-12-17 23:51:43,126 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-12-17 23:51:43,128 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-12-17 23:51:43,129 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-12-17 23:51:43,131 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-12-17 23:51:43,132 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-12-17 23:51:43,133 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-12-17 23:51:43,134 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-12-17 23:51:43,136 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-12-17 23:51:43,137 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-12-17 23:51:43,138 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-12-17 23:51:43,139 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-12-17 23:51:43,141 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-12-17 23:51:43,146 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-12-17 23:51:43,150 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-12-17 23:51:43,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-12-17 23:51:43,158 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-12-17 23:51:43,161 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-12-17 23:51:43,167 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... 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[2020-12-17 23:51:43,180 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-12-17 23:51:43,181 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-12-17 23:51:43,183 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-12-17 23:51:43,185 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-12-17 23:51:43,187 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-12-17 23:51:43,187 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-12-17 23:51:43,188 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-12-17 23:51:43,188 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-12-17 23:51:43,189 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-12-17 23:51:43,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-12-17 23:51:43,191 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-12-17 23:51:43,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/concurrent/svcomp-Reach-32bit-Automizer_Default-noMmResRef-FA-NoLbe-keepdead.epf [2020-12-17 23:51:43,250 INFO L113 SettingsManager]: Loading preferences was successful [2020-12-17 23:51:43,251 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-12-17 23:51:43,255 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-12-17 23:51:43,255 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-12-17 23:51:43,255 INFO L138 SettingsManager]: * Use SBE=true [2020-12-17 23:51:43,256 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-12-17 23:51:43,257 INFO L138 SettingsManager]: * sizeof long=4 [2020-12-17 23:51:43,257 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-12-17 23:51:43,257 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-12-17 23:51:43,257 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-12-17 23:51:43,258 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-12-17 23:51:43,259 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-12-17 23:51:43,259 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-12-17 23:51:43,259 INFO L138 SettingsManager]: * sizeof long double=12 [2020-12-17 23:51:43,259 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-12-17 23:51:43,260 INFO L138 SettingsManager]: * Use constant arrays=true [2020-12-17 23:51:43,260 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-12-17 23:51:43,260 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-12-17 23:51:43,260 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-12-17 23:51:43,261 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-12-17 23:51:43,261 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-12-17 23:51:43,261 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:51:43,261 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-12-17 23:51:43,262 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-12-17 23:51:43,262 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-12-17 23:51:43,262 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-12-17 23:51:43,262 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-12-17 23:51:43,262 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2020-12-17 23:51:43,263 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-12-17 23:51:43,263 INFO L138 SettingsManager]: * Remove dead ends from automaton=false [2020-12-17 23:51:43,263 INFO L138 SettingsManager]: * Minimization of abstraction=NONE [2020-12-17 23:51:43,263 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-12-17 23:51:43,677 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-12-17 23:51:43,704 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-12-17 23:51:43,707 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-12-17 23:51:43,708 INFO L271 PluginConnector]: Initializing CDTParser... [2020-12-17 23:51:43,709 INFO L275 PluginConnector]: CDTParser initialized [2020-12-17 23:51:43,710 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-12-17 23:51:43,781 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b42575bf/1f7137ca722142b6ac5b9319f75798de/FLAG1e843b4d4 [2020-12-17 23:51:44,528 INFO L306 CDTParser]: Found 1 translation units. [2020-12-17 23:51:44,529 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/pthread-wmm/safe017_tso.oepc.i [2020-12-17 23:51:44,565 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b42575bf/1f7137ca722142b6ac5b9319f75798de/FLAG1e843b4d4 [2020-12-17 23:51:44,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3b42575bf/1f7137ca722142b6ac5b9319f75798de [2020-12-17 23:51:44,793 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-12-17 23:51:44,796 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-12-17 23:51:44,800 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-12-17 23:51:44,800 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-12-17 23:51:44,804 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-12-17 23:51:44,805 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:51:44" (1/1) ... [2020-12-17 23:51:44,813 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@34b0624e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:44, skipping insertion in model container [2020-12-17 23:51:44,814 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.12 11:51:44" (1/1) ... [2020-12-17 23:51:44,824 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-12-17 23:51:44,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-12-17 23:51:45,347 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:51:45,358 INFO L203 MainTranslator]: Completed pre-run [2020-12-17 23:51:45,413 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-12-17 23:51:45,521 INFO L208 MainTranslator]: Completed translation [2020-12-17 23:51:45,522 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45 WrapperNode [2020-12-17 23:51:45,522 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-12-17 23:51:45,523 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-12-17 23:51:45,524 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-12-17 23:51:45,524 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-12-17 23:51:45,533 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,587 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,636 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-12-17 23:51:45,637 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-12-17 23:51:45,637 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-12-17 23:51:45,638 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-12-17 23:51:45,652 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,652 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,668 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,669 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,684 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,690 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,692 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... [2020-12-17 23:51:45,699 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-12-17 23:51:45,704 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-12-17 23:51:45,704 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-12-17 23:51:45,704 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-12-17 23:51:45,707 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-12-17 23:51:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-12-17 23:51:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_begin [2020-12-17 23:51:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-12-17 23:51:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-12-17 23:51:45,799 INFO L130 BoogieDeclarations]: Found specification of procedure P0 [2020-12-17 23:51:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P0 [2020-12-17 23:51:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure P1 [2020-12-17 23:51:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P1 [2020-12-17 23:51:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure P2 [2020-12-17 23:51:45,800 INFO L138 BoogieDeclarations]: Found implementation of procedure P2 [2020-12-17 23:51:45,800 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-12-17 23:51:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_atomic_end [2020-12-17 23:51:45,801 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-12-17 23:51:45,801 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-12-17 23:51:45,803 WARN L208 CfgBuilder]: User set CodeBlockSize to SequenceOfStatements but program contains fork statements. Overwriting the user preferences and setting CodeBlockSize to SingleStatement [2020-12-17 23:51:46,230 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-12-17 23:51:46,230 INFO L298 CfgBuilder]: Removed 10 assume(true) statements. [2020-12-17 23:51:46,232 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:51:46 BoogieIcfgContainer [2020-12-17 23:51:46,232 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-12-17 23:51:46,234 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-12-17 23:51:46,234 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-12-17 23:51:46,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-12-17 23:51:46,238 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.12 11:51:44" (1/3) ... [2020-12-17 23:51:46,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b8b242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:51:46, skipping insertion in model container [2020-12-17 23:51:46,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.12 11:51:45" (2/3) ... [2020-12-17 23:51:46,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20b8b242 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.12 11:51:46, skipping insertion in model container [2020-12-17 23:51:46,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.12 11:51:46" (3/3) ... [2020-12-17 23:51:46,241 INFO L111 eAbstractionObserver]: Analyzing ICFG safe017_tso.oepc.i [2020-12-17 23:51:46,257 WARN L168 ceAbstractionStarter]: Switching off computation of Hoare annotation because input is a concurrent program [2020-12-17 23:51:46,257 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-12-17 23:51:46,261 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-12-17 23:51:46,262 INFO L351 ceAbstractionStarter]: Constructing petrified ICFG for 1 thread instances. [2020-12-17 23:51:46,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,293 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,293 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,294 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,294 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,294 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,294 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,295 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,296 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,296 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,297 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,297 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,298 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,298 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,299 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#in~arg.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,299 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,300 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,300 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,301 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,303 WARN L313 ript$VariableManager]: TermVariabe |P0Thread1of1ForFork0_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,304 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,304 WARN L313 ript$VariableManager]: TermVariabe P0Thread1of1ForFork0_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,309 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,309 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,309 WARN L313 ript$VariableManager]: TermVariabe P1Thread1of1ForFork1_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,309 WARN L313 ript$VariableManager]: TermVariabe |P1Thread1of1ForFork1_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.base not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,316 WARN L313 ript$VariableManager]: TermVariabe P2Thread1of1ForFork2_~arg.offset not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,316 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.base| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,317 WARN L313 ript$VariableManager]: TermVariabe |P2Thread1of1ForFork2_#res.offset| not constructed by VariableManager. Cannot ensure absence of name clashes. [2020-12-17 23:51:46,319 INFO L149 ThreadInstanceAdder]: Constructed 0 joinOtherThreadTransitions. [2020-12-17 23:51:46,331 INFO L253 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-12-17 23:51:46,355 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-12-17 23:51:46,355 INFO L378 AbstractCegarLoop]: Hoare is true [2020-12-17 23:51:46,355 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-12-17 23:51:46,355 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-12-17 23:51:46,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-12-17 23:51:46,356 INFO L382 AbstractCegarLoop]: Difference is false [2020-12-17 23:51:46,356 INFO L383 AbstractCegarLoop]: Minimize is NONE [2020-12-17 23:51:46,356 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-12-17 23:51:46,368 INFO L100 iNet2FiniteAutomaton]: Start petriNet2FiniteAutomaton. Operand has 83 places, 76 transitions, 167 flow [2020-12-17 23:51:47,199 INFO L122 iNet2FiniteAutomaton]: Finished petriNet2FiniteAutomaton. Result has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:47,254 INFO L276 IsEmpty]: Start isEmpty. Operand has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:47,299 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-12-17 23:51:47,299 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:51:47,301 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:51:47,301 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:51:47,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:51:47,308 INFO L82 PathProgramCache]: Analyzing trace with hash 1568087296, now seen corresponding path program 1 times [2020-12-17 23:51:47,318 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:51:47,318 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886008185] [2020-12-17 23:51:47,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:51:47,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:51:47,822 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:51:47,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886008185] [2020-12-17 23:51:47,823 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:51:47,824 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:51:47,824 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117107008] [2020-12-17 23:51:47,830 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:51:47,830 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:51:47,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:51:47,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:51:47,877 INFO L87 Difference]: Start difference. First operand has 8446 states, 8444 states have (on average 3.5900047370914256) internal successors, (30314), 8445 states have internal predecessors, (30314), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:48,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:51:48,350 INFO L93 Difference]: Finished difference Result 11326 states and 39206 transitions. [2020-12-17 23:51:48,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:51:48,353 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 40 [2020-12-17 23:51:48,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:51:48,355 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:51:48,356 INFO L78 Accepts]: Start accepts. Automaton has 11326 states and 39206 transitions. Word has length 40 [2020-12-17 23:51:48,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:51:48,358 INFO L481 AbstractCegarLoop]: Abstraction has 11326 states and 39206 transitions. [2020-12-17 23:51:48,358 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:48,358 INFO L276 IsEmpty]: Start isEmpty. Operand 11326 states and 39206 transitions. [2020-12-17 23:51:48,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-12-17 23:51:48,377 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:51:48,377 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:51:48,377 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-12-17 23:51:48,378 INFO L429 AbstractCegarLoop]: === Iteration 2 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:51:48,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:51:48,379 INFO L82 PathProgramCache]: Analyzing trace with hash -291447777, now seen corresponding path program 1 times [2020-12-17 23:51:48,379 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:51:48,379 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [230398835] [2020-12-17 23:51:48,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:51:48,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:51:48,578 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:51:48,578 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [230398835] [2020-12-17 23:51:48,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:51:48,579 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:51:48,579 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1000479552] [2020-12-17 23:51:48,581 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:51:48,581 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:51:48,582 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:51:48,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:51:48,583 INFO L87 Difference]: Start difference. First operand 11326 states and 39206 transitions. Second operand has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:48,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:51:48,929 INFO L93 Difference]: Finished difference Result 16126 states and 55446 transitions. [2020-12-17 23:51:48,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:51:48,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 42 [2020-12-17 23:51:48,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:51:48,931 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:51:48,931 INFO L78 Accepts]: Start accepts. Automaton has 16126 states and 55446 transitions. Word has length 42 [2020-12-17 23:51:48,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:51:48,932 INFO L481 AbstractCegarLoop]: Abstraction has 16126 states and 55446 transitions. [2020-12-17 23:51:48,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.0) internal successors, (42), 6 states have internal predecessors, (42), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:48,933 INFO L276 IsEmpty]: Start isEmpty. Operand 16126 states and 55446 transitions. [2020-12-17 23:51:49,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-12-17 23:51:49,074 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:51:49,074 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:51:49,074 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-12-17 23:51:49,075 INFO L429 AbstractCegarLoop]: === Iteration 3 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:51:49,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:51:49,075 INFO L82 PathProgramCache]: Analyzing trace with hash 209891192, now seen corresponding path program 1 times [2020-12-17 23:51:49,076 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:51:49,076 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [364584445] [2020-12-17 23:51:49,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:51:49,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:51:49,343 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:51:49,344 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [364584445] [2020-12-17 23:51:49,344 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:51:49,344 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:51:49,345 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749921373] [2020-12-17 23:51:49,345 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:51:49,345 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:51:49,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:51:49,346 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:51:49,347 INFO L87 Difference]: Start difference. First operand 16126 states and 55446 transitions. Second operand has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:49,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:51:49,892 INFO L93 Difference]: Finished difference Result 26310 states and 89642 transitions. [2020-12-17 23:51:49,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:51:49,893 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 43 [2020-12-17 23:51:49,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:51:49,894 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=161, Unknown=0, NotChecked=0, Total=240 [2020-12-17 23:51:49,894 INFO L78 Accepts]: Start accepts. Automaton has 26310 states and 89642 transitions. Word has length 43 [2020-12-17 23:51:49,894 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:51:49,894 INFO L481 AbstractCegarLoop]: Abstraction has 26310 states and 89642 transitions. [2020-12-17 23:51:49,895 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.142857142857143) internal successors, (43), 7 states have internal predecessors, (43), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:49,895 INFO L276 IsEmpty]: Start isEmpty. Operand 26310 states and 89642 transitions. [2020-12-17 23:51:49,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-17 23:51:49,933 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:51:49,934 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:51:49,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-12-17 23:51:49,934 INFO L429 AbstractCegarLoop]: === Iteration 4 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:51:49,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:51:49,935 INFO L82 PathProgramCache]: Analyzing trace with hash -654532284, now seen corresponding path program 1 times [2020-12-17 23:51:49,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:51:49,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1450702616] [2020-12-17 23:51:49,936 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:51:49,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:51:50,170 WARN L193 SmtUtils]: Spent 162.00 ms on a formula simplification. DAG size of input: 12 DAG size of output: 8 [2020-12-17 23:51:50,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:51:50,197 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1450702616] [2020-12-17 23:51:50,197 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:51:50,197 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:51:50,198 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223463492] [2020-12-17 23:51:50,198 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:51:50,198 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:51:50,199 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:51:50,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:51:50,199 INFO L87 Difference]: Start difference. First operand 26310 states and 89642 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:50,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:51:50,694 INFO L93 Difference]: Finished difference Result 45766 states and 153282 transitions. [2020-12-17 23:51:50,694 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:51:50,695 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-12-17 23:51:50,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:51:50,696 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:51:50,696 INFO L78 Accepts]: Start accepts. Automaton has 45766 states and 153282 transitions. Word has length 45 [2020-12-17 23:51:50,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:51:50,696 INFO L481 AbstractCegarLoop]: Abstraction has 45766 states and 153282 transitions. [2020-12-17 23:51:50,697 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:50,697 INFO L276 IsEmpty]: Start isEmpty. Operand 45766 states and 153282 transitions. [2020-12-17 23:51:50,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-12-17 23:51:50,772 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:51:50,772 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:51:50,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-12-17 23:51:50,772 INFO L429 AbstractCegarLoop]: === Iteration 5 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:51:50,774 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:51:50,774 INFO L82 PathProgramCache]: Analyzing trace with hash 725194327, now seen corresponding path program 1 times [2020-12-17 23:51:50,774 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:51:50,775 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [679194452] [2020-12-17 23:51:50,775 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:51:50,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:51:51,065 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:51:51,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [679194452] [2020-12-17 23:51:51,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:51:51,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:51:51,069 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057077883] [2020-12-17 23:51:51,069 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:51:51,069 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:51:51,070 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:51:51,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:51:51,070 INFO L87 Difference]: Start difference. First operand 45766 states and 153282 transitions. Second operand has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:51,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:51:51,898 INFO L93 Difference]: Finished difference Result 75062 states and 248446 transitions. [2020-12-17 23:51:51,899 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-12-17 23:51:51,900 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 45 [2020-12-17 23:51:51,900 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:51:51,901 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:51:51,901 INFO L78 Accepts]: Start accepts. Automaton has 75062 states and 248446 transitions. Word has length 45 [2020-12-17 23:51:51,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:51:51,901 INFO L481 AbstractCegarLoop]: Abstraction has 75062 states and 248446 transitions. [2020-12-17 23:51:51,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.5) internal successors, (45), 6 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:51,902 INFO L276 IsEmpty]: Start isEmpty. Operand 75062 states and 248446 transitions. [2020-12-17 23:51:51,968 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-12-17 23:51:51,968 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:51:51,969 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:51:51,969 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-12-17 23:51:51,969 INFO L429 AbstractCegarLoop]: === Iteration 6 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:51:51,970 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:51:51,970 INFO L82 PathProgramCache]: Analyzing trace with hash -643023679, now seen corresponding path program 1 times [2020-12-17 23:51:51,974 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:51:51,974 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1530341914] [2020-12-17 23:51:51,975 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:51:51,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:51:52,291 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:51:52,293 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1530341914] [2020-12-17 23:51:52,293 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:51:52,293 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-12-17 23:51:52,293 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [451756520] [2020-12-17 23:51:52,294 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-12-17 23:51:52,295 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:51:52,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-12-17 23:51:52,296 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-12-17 23:51:52,296 INFO L87 Difference]: Start difference. First operand 75062 states and 248446 transitions. Second operand has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:52,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:51:52,883 INFO L93 Difference]: Finished difference Result 54524 states and 176635 transitions. [2020-12-17 23:51:52,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-12-17 23:51:52,884 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 46 [2020-12-17 23:51:52,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:51:52,885 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2020-12-17 23:51:52,885 INFO L78 Accepts]: Start accepts. Automaton has 54524 states and 176635 transitions. Word has length 46 [2020-12-17 23:51:52,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:51:52,886 INFO L481 AbstractCegarLoop]: Abstraction has 54524 states and 176635 transitions. [2020-12-17 23:51:52,886 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 6 states, 6 states have (on average 7.666666666666667) internal successors, (46), 6 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:52,886 INFO L276 IsEmpty]: Start isEmpty. Operand 54524 states and 176635 transitions. [2020-12-17 23:51:52,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-12-17 23:51:52,937 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:51:52,938 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:51:52,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-12-17 23:51:52,938 INFO L429 AbstractCegarLoop]: === Iteration 7 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:51:52,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:51:52,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2047216989, now seen corresponding path program 1 times [2020-12-17 23:51:52,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:51:52,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356198611] [2020-12-17 23:51:52,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:51:52,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:51:53,104 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:51:53,105 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356198611] [2020-12-17 23:51:53,105 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:51:53,105 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-12-17 23:51:53,106 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1915058266] [2020-12-17 23:51:53,106 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-12-17 23:51:53,106 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:51:53,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-12-17 23:51:53,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-12-17 23:51:53,108 INFO L87 Difference]: Start difference. First operand 54524 states and 176635 transitions. Second operand has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:53,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:51:53,773 INFO L93 Difference]: Finished difference Result 31007 states and 97663 transitions. [2020-12-17 23:51:53,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-12-17 23:51:53,774 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 47 [2020-12-17 23:51:53,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:51:53,775 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=137, Unknown=0, NotChecked=0, Total=210 [2020-12-17 23:51:53,775 INFO L78 Accepts]: Start accepts. Automaton has 31007 states and 97663 transitions. Word has length 47 [2020-12-17 23:51:53,775 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:51:53,776 INFO L481 AbstractCegarLoop]: Abstraction has 31007 states and 97663 transitions. [2020-12-17 23:51:53,776 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 7 states, 7 states have (on average 6.714285714285714) internal successors, (47), 7 states have internal predecessors, (47), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:53,776 INFO L276 IsEmpty]: Start isEmpty. Operand 31007 states and 97663 transitions. [2020-12-17 23:51:53,811 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-12-17 23:51:53,811 INFO L496 BasicCegarLoop]: Found error trace [2020-12-17 23:51:53,811 INFO L504 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-12-17 23:51:53,811 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-12-17 23:51:53,812 INFO L429 AbstractCegarLoop]: === Iteration 8 === [ULTIMATE.startErr2INUSE_VIOLATION, ULTIMATE.startErr1INUSE_VIOLATION, ULTIMATE.startErr0INUSE_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-12-17 23:51:53,812 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-12-17 23:51:53,812 INFO L82 PathProgramCache]: Analyzing trace with hash -306973980, now seen corresponding path program 1 times [2020-12-17 23:51:53,812 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-12-17 23:51:53,813 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1455083669] [2020-12-17 23:51:53,813 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-12-17 23:51:53,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-12-17 23:51:53,970 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-12-17 23:51:53,970 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1455083669] [2020-12-17 23:51:53,971 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-12-17 23:51:53,971 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-12-17 23:51:53,971 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1236734078] [2020-12-17 23:51:53,971 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-12-17 23:51:53,972 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-12-17 23:51:53,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-12-17 23:51:53,972 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-12-17 23:51:53,973 INFO L87 Difference]: Start difference. First operand 31007 states and 97663 transitions. Second operand has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-12-17 23:51:54,417 INFO L93 Difference]: Finished difference Result 17723 states and 55417 transitions. [2020-12-17 23:51:54,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-12-17 23:51:54,417 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 49 [2020-12-17 23:51:54,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-12-17 23:51:54,418 INFO L763 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=116, Invalid=226, Unknown=0, NotChecked=0, Total=342 [2020-12-17 23:51:54,418 INFO L78 Accepts]: Start accepts. Automaton has 17723 states and 55417 transitions. Word has length 49 [2020-12-17 23:51:54,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-12-17 23:51:54,418 INFO L481 AbstractCegarLoop]: Abstraction has 17723 states and 55417 transitions. [2020-12-17 23:51:54,418 INFO L482 AbstractCegarLoop]: Interpolant automaton has has 8 states, 8 states have (on average 6.125) internal successors, (49), 8 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2020-12-17 23:51:54,418 INFO L276 IsEmpty]: Start isEmpty. Operand 17723 states and 55417 transitions. [2020-12-17 23:51:54,441 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-12-17 23:51:54,442 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-12-17 23:51:54,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.12 11:51:54 BasicIcfg [2020-12-17 23:51:54,447 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-12-17 23:51:54,455 INFO L168 Benchmark]: Toolchain (without parser) took 9652.46 ms. Allocated memory was 302.0 MB in the beginning and 4.3 GB in the end (delta: 4.0 GB). Free memory was 276.5 MB in the beginning and 3.7 GB in the end (delta: -3.4 GB). Peak memory consumption was 552.2 MB. Max. memory is 16.0 GB. [2020-12-17 23:51:54,456 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:51:54,458 INFO L168 Benchmark]: CACSL2BoogieTranslator took 722.90 ms. Allocated memory is still 302.0 MB. Free memory was 276.2 MB in the beginning and 245.7 MB in the end (delta: 30.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. [2020-12-17 23:51:54,458 INFO L168 Benchmark]: Boogie Procedure Inliner took 112.47 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 283.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. [2020-12-17 23:51:54,460 INFO L168 Benchmark]: Boogie Preprocessor took 62.54 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 282.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. [2020-12-17 23:51:54,460 INFO L168 Benchmark]: RCFGBuilder took 529.01 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 260.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:51:54,465 INFO L168 Benchmark]: TraceAbstraction took 8212.67 ms. Allocated memory was 302.0 MB in the beginning and 4.3 GB in the end (delta: 4.0 GB). Free memory was 260.3 MB in the beginning and 3.7 GB in the end (delta: -3.4 GB). Peak memory consumption was 535.1 MB. Max. memory is 16.0 GB. [2020-12-17 23:51:54,468 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 302.0 MB. Free memory is still 272.0 MB. There was no memory consumed. Max. memory is 16.0 GB. * CACSL2BoogieTranslator took 722.90 ms. Allocated memory is still 302.0 MB. Free memory was 276.2 MB in the beginning and 245.7 MB in the end (delta: 30.6 MB). Peak memory consumption was 29.4 MB. Max. memory is 16.0 GB. * Boogie Procedure Inliner took 112.47 ms. Allocated memory is still 302.0 MB. Free memory was 245.7 MB in the beginning and 283.4 MB in the end (delta: -37.7 MB). Peak memory consumption was 4.6 MB. Max. memory is 16.0 GB. * Boogie Preprocessor took 62.54 ms. Allocated memory is still 302.0 MB. Free memory was 283.4 MB in the beginning and 282.4 MB in the end (delta: 1.0 MB). There was no memory consumed. Max. memory is 16.0 GB. * RCFGBuilder took 529.01 ms. Allocated memory is still 302.0 MB. Free memory was 282.4 MB in the beginning and 260.3 MB in the end (delta: 22.0 MB). Peak memory consumption was 23.1 MB. Max. memory is 16.0 GB. * TraceAbstraction took 8212.67 ms. Allocated memory was 302.0 MB in the beginning and 4.3 GB in the end (delta: 4.0 GB). Free memory was 260.3 MB in the beginning and 3.7 GB in the end (delta: -3.4 GB). Peak memory consumption was 535.1 MB. Max. memory is 16.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 17]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 74 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 8.0s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 4.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.8s, HoareTripleCheckerStatistics: 914 SDtfs, 1707 SDslu, 3047 SDs, 0 SdLazy, 357 SolverSat, 82 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 110 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 89 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 1.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=75062occurred in iteration=5, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 357 NumberOfCodeBlocks, 357 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 349 ConstructedInterpolants, 0 QuantifiedInterpolants, 40707 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 8 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...